mirror of
https://github.com/git/git
synced 2024-08-27 19:49:21 +00:00
Merge branch 'np/malloc-threading' into maint
* np/malloc-threading: Thread-safe xmalloc and xrealloc needs a recursive mutex Make xmalloc and xrealloc thread-safe
This commit is contained in:
commit
5c1eba5e31
|
@ -17,8 +17,8 @@
|
|||
#include "dir.h"
|
||||
|
||||
#ifndef NO_PTHREADS
|
||||
#include "thread-utils.h"
|
||||
#include <pthread.h>
|
||||
#include "thread-utils.h"
|
||||
#endif
|
||||
|
||||
static char const * const grep_usage[] = {
|
||||
|
|
|
@ -18,8 +18,8 @@
|
|||
#include "refs.h"
|
||||
|
||||
#ifndef NO_PTHREADS
|
||||
#include "thread-utils.h"
|
||||
#include <pthread.h>
|
||||
#include "thread-utils.h"
|
||||
#endif
|
||||
|
||||
static const char pack_usage[] =
|
||||
|
@ -1522,6 +1522,13 @@ static void find_deltas(struct object_entry **list, unsigned *list_size,
|
|||
|
||||
#ifndef NO_PTHREADS
|
||||
|
||||
static void try_to_free_from_threads(size_t size)
|
||||
{
|
||||
read_lock();
|
||||
release_pack_memory(size, -1);
|
||||
read_unlock();
|
||||
}
|
||||
|
||||
/*
|
||||
* The main thread waits on the condition that (at least) one of the workers
|
||||
* has stopped working (which is indicated in the .working member of
|
||||
|
@ -1552,14 +1559,16 @@ static pthread_cond_t progress_cond;
|
|||
*/
|
||||
static void init_threaded_search(void)
|
||||
{
|
||||
pthread_mutex_init(&read_mutex, NULL);
|
||||
init_recursive_mutex(&read_mutex);
|
||||
pthread_mutex_init(&cache_mutex, NULL);
|
||||
pthread_mutex_init(&progress_mutex, NULL);
|
||||
pthread_cond_init(&progress_cond, NULL);
|
||||
set_try_to_free_routine(try_to_free_from_threads);
|
||||
}
|
||||
|
||||
static void cleanup_threaded_search(void)
|
||||
{
|
||||
set_try_to_free_routine(NULL);
|
||||
pthread_cond_destroy(&progress_cond);
|
||||
pthread_mutex_destroy(&read_mutex);
|
||||
pthread_mutex_destroy(&cache_mutex);
|
||||
|
|
|
@ -18,11 +18,17 @@
|
|||
*/
|
||||
#define pthread_mutex_t CRITICAL_SECTION
|
||||
|
||||
#define pthread_mutex_init(a,b) InitializeCriticalSection((a))
|
||||
#define pthread_mutex_init(a,b) (InitializeCriticalSection((a)), 0)
|
||||
#define pthread_mutex_destroy(a) DeleteCriticalSection((a))
|
||||
#define pthread_mutex_lock EnterCriticalSection
|
||||
#define pthread_mutex_unlock LeaveCriticalSection
|
||||
|
||||
typedef int pthread_mutexattr_t;
|
||||
#define pthread_mutexattr_init(a) (*(a) = 0)
|
||||
#define pthread_mutexattr_destroy(a) do {} while (0)
|
||||
#define pthread_mutexattr_settype(a, t) 0
|
||||
#define PTHREAD_MUTEX_RECURSIVE 0
|
||||
|
||||
/*
|
||||
* Implement simple condition variable for Windows threads, based on ACE
|
||||
* implementation.
|
||||
|
|
|
@ -356,6 +356,8 @@ static inline void *gitmempcpy(void *dest, const void *src, size_t n)
|
|||
|
||||
extern void release_pack_memory(size_t, int);
|
||||
|
||||
extern void set_try_to_free_routine(void (*routine)(size_t));
|
||||
|
||||
extern char *xstrdup(const char *str);
|
||||
extern void *xmalloc(size_t size);
|
||||
extern void *xmallocz(size_t size);
|
||||
|
|
|
@ -1,4 +1,5 @@
|
|||
#include "cache.h"
|
||||
#include <pthread.h>
|
||||
|
||||
#if defined(hpux) || defined(__hpux) || defined(_hpux)
|
||||
# include <sys/pstat.h>
|
||||
|
@ -43,3 +44,18 @@ int online_cpus(void)
|
|||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int init_recursive_mutex(pthread_mutex_t *m)
|
||||
{
|
||||
pthread_mutexattr_t a;
|
||||
int ret;
|
||||
|
||||
ret = pthread_mutexattr_init(&a);
|
||||
if (!ret) {
|
||||
ret = pthread_mutexattr_settype(&a, PTHREAD_MUTEX_RECURSIVE);
|
||||
if (!ret)
|
||||
ret = pthread_mutex_init(m, &a);
|
||||
pthread_mutexattr_destroy(&a);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
|
|
@ -2,5 +2,6 @@
|
|||
#define THREAD_COMPAT_H
|
||||
|
||||
extern int online_cpus(void);
|
||||
extern int init_recursive_mutex(pthread_mutex_t*);
|
||||
|
||||
#endif /* THREAD_COMPAT_H */
|
||||
|
|
20
wrapper.c
20
wrapper.c
|
@ -3,11 +3,23 @@
|
|||
*/
|
||||
#include "cache.h"
|
||||
|
||||
static void try_to_free_builtin(size_t size)
|
||||
{
|
||||
release_pack_memory(size, -1);
|
||||
}
|
||||
|
||||
static void (*try_to_free_routine)(size_t size) = try_to_free_builtin;
|
||||
|
||||
void set_try_to_free_routine(void (*routine)(size_t))
|
||||
{
|
||||
try_to_free_routine = (routine) ? routine : try_to_free_builtin;
|
||||
}
|
||||
|
||||
char *xstrdup(const char *str)
|
||||
{
|
||||
char *ret = strdup(str);
|
||||
if (!ret) {
|
||||
release_pack_memory(strlen(str) + 1, -1);
|
||||
try_to_free_routine(strlen(str) + 1);
|
||||
ret = strdup(str);
|
||||
if (!ret)
|
||||
die("Out of memory, strdup failed");
|
||||
|
@ -21,7 +33,7 @@ void *xmalloc(size_t size)
|
|||
if (!ret && !size)
|
||||
ret = malloc(1);
|
||||
if (!ret) {
|
||||
release_pack_memory(size, -1);
|
||||
try_to_free_routine(size);
|
||||
ret = malloc(size);
|
||||
if (!ret && !size)
|
||||
ret = malloc(1);
|
||||
|
@ -67,7 +79,7 @@ void *xrealloc(void *ptr, size_t size)
|
|||
if (!ret && !size)
|
||||
ret = realloc(ptr, 1);
|
||||
if (!ret) {
|
||||
release_pack_memory(size, -1);
|
||||
try_to_free_routine(size);
|
||||
ret = realloc(ptr, size);
|
||||
if (!ret && !size)
|
||||
ret = realloc(ptr, 1);
|
||||
|
@ -83,7 +95,7 @@ void *xcalloc(size_t nmemb, size_t size)
|
|||
if (!ret && (!nmemb || !size))
|
||||
ret = calloc(1, 1);
|
||||
if (!ret) {
|
||||
release_pack_memory(nmemb * size, -1);
|
||||
try_to_free_routine(nmemb * size);
|
||||
ret = calloc(nmemb, size);
|
||||
if (!ret && (!nmemb || !size))
|
||||
ret = calloc(1, 1);
|
||||
|
|
Loading…
Reference in a new issue